Process of dissolving size for paper-making.



PATENTED APR. 3, 1906.

B. KNIFFLER. PROGBS$ 0F DISSOLVING SIZE FOR PAPER MAKING.

APPLIOATION FILED JULY 7. 1905.

- Jzaezzia Witneases! ssouo knrrrtnn, or srou'nrmn, nas'saonusnr'rs; PHUE$S UIF IISSULWIING SlZE IF'H Pen -Mum;

no. erases.

1'0 all. whom it may concern.-

Be it known that I, BRUNo KNIFFLER, of

Stoneh'am, county of Middlesex, State of Massachusetts, have invented an Improvement in Processes of Dissolving Size for lPaper-Making, of which the following descrip-I tlon, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to a process for dissolving size for paper-making, and has for its object to improve the process to the end that a more perfect emulsion is produced with a size containing a larger percentage of free resin than the ordinary or commercial resin soap, size. 1

Figure 1 shows in partial elevation and vertical section one form of apparatus by which my improved process may be carried out. Fig.2 1s a sectional detail of'the device for spraying the li uefied resin size into a measured volume of ot water.

lln carr 'ng, out my invention a measured volume 0 resin size which contains a larger percentage of free resin than ordinary resin soa is heated and then sprayed into a measure volume of hot water to produce an emul sion, and the emulsion thus produced is agitated and a measured'volume of cold water added to it,when it is read for use. The dissolved size, therefore, wli en ready for use contains redetermined relative proportions of resin size and water, which in practice is important, as the strength of the emulsion is thus known accurately.

While it is obvious that many ways may be such size being herein designated resin 7 employed for carrying out my invention, one

'the case 0 way is herein shown for the sake of illustration. v

or represents a tank adapted to contain a measured volume of resin size. A steam-pi e tank for t e in ose of heating the resin size. A pi e 0 ea s from the bottom of the tank a, W ich I conducts the liquefied resin size to a case or shell 0, which is of globular or other suitable form. A regulating-valve c is contained in the pipe 0 to re ulate the flow. (1 represents a steam-pipe w 'ch also leads to said shell or case 0, terminating at an injector-nozzle d, which is contained within said'shell or case. A regulatiri -valve d is contained in the steam-pipe 4 opposite and in almement with the Specification of Letters Patent.

Application filed uly 7, 1905. Serial No. 268,708.

V inj actor-nozzle, which I pose A discharge-pipe 0 leads from lPatented April 3, 1906. I

conducts the spray to a tank f, which contains a measured volume of hot water, the spray entering the hot water at a point below the level thereof and pro-r ducing an emulsion. The water contained in the tank f is heated by a set of steam-pipes g, which are perforated to provide for the escape of the steam directly into the water, and said steam-pipes are connected with a main source of supply. The 'ets of steam issuing from the steam pipes g also act to forcibly agi tate the emulsion 1n the tank f.

it re resents a pipe Which'is connected to a suitab 0 supply of cold water, and h a regulating-valve in said ipe, and b o ening said valve h a measured volume of cdld water is first caused to flow. into said valve is closed, and then the measured volume of water contained in the tank is heat ed by the steam as aforesaid, and then the measured volume of liquefied resin size is sprayed into the measured volume of hot water to opened and another measured volume of water caused to flow into the tank, which bein thus added to the emulsion contained in sai the tank f, and then produce the emulsion, and the emulsion having been produced said valve h isthen tank will further dilute it, and the dissolii'ed size is then ready for use, being of a predetermined and known strength, the free resin being held in sus ension. l

The liquefie size entering the shell or case a is so d1vided or disintegrated by the jet of steam issuin from the injector-nozzle that the s ray whlch enters the hot water is comd of very minute particles, and as a conse uence a more perfect emulsionis produced, an il, furthermore, a size which contains a larger percentage of free or unsaponified resin than ordinar resin soa may be used, as the free resin wil be emuls' act advantageously instead of when added to the pa er pulp.

Having thus descri ed my invention, what claim as new, and desire to secure by Letters Patent, is-

1. The process herein described of preparingsize for paper-making, which consists in heating a measured volume of resin size, and spraying the liquefied size into a measured injuriously volume of hot Water, to produce an emulsion,

and then adding to the emulsion duced a measured volume of cold Water.

2. The process herein described ing size for paper-making, which consists in thus proof prepar Y IIO heating a measured volume of resinsize, then name to this specification in the pfsncegof spll'aying tllie liquefied sizedinto a measured two subscribing Witnesses. v0 ume of 0t water to pro use an emulsion, I and then agitatin the emulsion thus pro B KNIFFLER' 5 duced and adding t ereto a measured volume Witnesses:

of cold Water. I B. J. NOYES,

In testimony whereof I have signed .my' H. B. DAVIS. 

